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queue.py
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38 lines (34 loc) · 853 Bytes
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queue = []
def enQ():
queue.append(raw_input("enter new string:").strip())
def deQ():
if len(queue) == 0:
print "empty queue\n"
else:
print 'Removed![',`queue.pop()`,']'
def viewQ():
print queue
CMDS = {'e': enQ,'d':deQ,'v':viewQ}
def showmenu():
pr="""
(E)nqueue
(D)enqueue
(V)iew
(Q)uit
enter choice: """
while True:
while True:
try:
choice = raw_input(pr).strip()[0].lower()
except (EOFError,KeyboardInterpt,IndexError):
choice = "q"
print "\nYou picked:[%s]" % choice
if choice not in "devq":
print "error,try again"
else:
break
if choice == "q":
break
CMDS[choice]()
if __name__ == '__main__':
showmenu()